Amazon Lex extends custom vocabulary feature to additional languages

Amazon Lex now extends custom vocabulary support to multiple languages, including Chinese, Japanese, Korean, Portuguese, Catalan, French, German, and Spanish locales. This enhancement enables you to improve speech recognition accuracy for domain-specific terminology, proper nouns, and rare words across a wider range of languages, creating more natural and accurate conversational experiences. With custom vocabulary, you can provide Amazon Lex with specific phrases that should be recognized during audio conversations, even when the spoken audio might be ambiguous. For example, you can ensure technical terms like "Cognito" or industry-specific vocabulary like "solvency" are correctly transcribed during bot interactions, providing consistent speech recognition capabilities that work both for intent recognition and improving slot value elicitation.

This feature is now available in all AWS Regions where Amazon Lex operates for the supported languages.

To learn more about implementing custom vocabulary for your bots, visit the Amazon Lex V2 Developer Guide.